Transcript Seed Dispersal

What do you think these are pictures of?
SEEDS
SEEDS ARE EVERYWHERE…...
Where
In our food
can you find seeds?
In our backyards
WHAT WILL THESE SEEDS BECOME?
Acorn
Oak Tree
Coconut
Coconut Tree
WHAT WILL THESE SEEDS BECOME?
Maple Tree
Peas
Pea Plants
WHAT IS THE FUNCTION OF A SEED?
•Nourishment: The seed provides
food for the young plant while it is
developing the parts it needs to make
its own food.
• Seed Dispersal: The design of
the seed helps the seed travel to
other places to germinate.
SEED DISPERSAL
Click below for
video link
YouTube - Seed Dispersal
PARTS OF A SEED
Embryo (Young Plant)
Seed Coat
Radicle
Cotyledon (Stored Food)
[kot-l-eed-n]
THE GERMINATION(GROWTH) OF A SEED
Click below
for video
Germination of a Seed
PART 2
STRUCTURES OF A
PLANT
ROOTS
Functions



Keep the plants
in place
Absorbs water
and nutrients
from the soil
Some roots help
the plant by
storing food.
TYPES OF ROOTS
Taproots
•Large
•Grow deep into the soil.
•Are able to store food.
Fibrous Roots
• Thin and stringy
•Lie close to the surface
•Can often be found growing
side by side with taproots.
Adventitious Roots
•Strong and can be thin or
thick.
•Develop to help the plant
climb
•Found in ivies and vines
STEM

Functions:
Supports the plant
and gives them
shape.
 Contain small tubes:

 Xylem
carries water
and minerals from the
roots
 Phloem: carries food
that is made in the
leaf to the rest of the
plants.
LEAVES
Where plants make their own food in a process
called photosynthesis.
 Many kinds of leaves

 Needles
 Broad
Leaves
NEEDLES
Found on most
conifers and cacti.
 They do not shed
their needles in
the Fall.
 Their shape helps
prevent water loss.

BROAD LEAVES


Leaves can be
found in all shapes
and sizes based on
their environment.
In cold climates
plants shed their
leaves because
there is less
sunlight for
photosynthesis to
take place and the
plant needs to save
its energy.
Leaves are the factory of the plant where food
is made in a process called photosynthesis.
Click link to view video
http://vimeo.com/1616728
WHAT IS PHOTOSYNTHESIS?
A process plants
use to make their
own food
 Plants’ leaves
contain chlorophyll
 Chlorophyll (green
color) makes
photosynthesis
possible

THE CHLOROPHYLL ABSORBS AND TRAPS
THE SUNLIGHT OR ENERGY FROM THE SUN.
•THE SUNLIGHT IS COMBINED WITH WATER AND NUTRIENTS FROM THE
SOIL THAT HAS BEEN ABSORBED BY THE ROOTS.
•CARBON DIOXIDE EXHALED BY ANIMALS IS ALSO ABSORBED BY THE
LEAVES
When the process of photosynthesis is complete, the plant has
made 2 things.:
Sugar : The food the plant has made for itself
Oxygen: A waste that is released by the plant that we
need to survive.
Oxygen
Animals and plants need each other to
survive.
•Plants give animals oxygen to breath and live.
•We give plants carbon dioxide to make food.
TRANSPIRATION ALSO TAKES PLACE IN THE
LEAVES OF A PLANT

What is transpiration?

Water is absorbed from
the roots of a plant and
travels to the leaf.

The sun heats the water
in the leaf turning the
water from a liquid to a
gas called water vapor

The water is released
into the air through tiny
holes called stomata
http://www.youtube.com/watch?v=At1BJJDcXhk&feature=related
FLOWER
 What
is the
function of the
flower in a plant?

Attract insects and
animals using bright
colors and wonderful
scents.

Produce or make the
fruit and seeds of the
plant
PARTS OF A FLOWER
STAMEN
The stamen
is the part of
the flower
that makes
pollen.
 Pollen is fine
powder
needed for
pollination.

PISTIL
The pistil is
made up of 3
main parts:
•Stigma
Collects pollen
•Style
Separates the
stigma from
the ovary
•Ovary
Where the
fruit/seeds
form.
Pistil
POLLINATION

What is pollination?

Pollination is how seeds are formed
to create a new plant.

Pollination occurs when pollen
from the anther on the top of the
stamen is carried to the stigma
on the top of the pistil.

The pollen travels down the pistil
through the style to the ovary

There the pollen fertilizes an
ovule and a new fruit/seed is
formed
http://videos.howstuffworks.com/hsw/9756our-flowering-world-flower-parts-video.htm
INSECTS AND ANIMALS ARE IMPORTANT
PARTICIPANTS IN POLLINATION
http://www.youtube.com/watc
h?v=ge3EM8AERV0
CAN YOU PUT THE PICTURES IN ORDER TO
SHOW THE LIFE CYCLE OF A SEED PLANT
Teachers' Domain: Life Cycle of a Seed Plant
SOME PLANTS USE SPORES TO REPRODUCE

What are spores?

Spores are tiny, seed
like spots on the
underside of certain
plants like ferns.

Spores contain stored
food and will fall of the
plant and
germinate(grow)if the
conditions around
them are right.
THERE ARE OTHER WAYS PLANTS CAN
REPRODUCE

Bulbs

A type of bud that
grows underground.
Tulips grow from a bulb.

Runners

Some plants can grow
from the stem of an
older plant. A spider
plant can reproduce this
way.
THERE ARE OTHER WAYS PLANTS CAN
REPRODUCE

Grafting

Combining two
different plants to
create a new and
better plant. You
can attach one
apple tree to the
trunk of another
apple tree to
make a better
tasting apple
THERE ARE OTHER WAYS PLANTS CAN
REPRODUCE

Tubers

Are swollen
underground stems.

We often eat them.

Tubers develop “eyes”
that will develop into a
new plant.
SOME REVIEW AND ASSESSMENT TOOLS
 http://www.ngfl-
cymru.org.uk/vtc/plant_repro/eng/Introduction/act
ivity1pop.htm Flower parts and reproduction.
 Starter activity
 Crickweb | KS1 Science